class_docstr: Simple TicTacToe Env, starts the game randomly half of the time.
code: def reset(self):
      self.board_state = np.zeros((3, 3), dtype=np.int64)
  
      # We"ll start with a 50% chance.
      if self.np_random.choice([0, 1]) == 0:
          self.play_random_move()
  
      # Return the observation.
      return self.board_state
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import gym
  from gym import spaces
  from gym.utils import seeding
  import numpy
  from tensor2tensor.data_generators import problem
  from tensor2tensor.layers import modalities
  from tensor2tensor.rl import gym_utils
label_desc: Use image node_id 4 for calling the TicTacToeEnv obj's underlying member method code with example usage: obj.reset() and returns: self